js常用身份校验规则 var Validator = { extractBirth: function(id) { // 身份证提取出生年月 var re = null, split, year, month, day; if (id.length === 15) { re = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/i; } else { re = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X)$/i; } /